Sergey Solodunov
mbed library sources. Supersedes mbed-src.
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mbed official
targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/rtc/TARGET_SAML21/rtc_count.c@144:423e1876dc07, 2016-08-02 (annotated)
- Committer:
- screamer
- Date:
- Tue Aug 02 14:07:36 2016 +0000
- Revision:
- 144:423e1876dc07
- Parent:
- 18:da299f395b9e
Added targets.json file for the supported targets in the release
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 18:da299f395b9e | 1 | /** |
| mbed_official | 18:da299f395b9e | 2 | * \file |
| mbed_official | 18:da299f395b9e | 3 | * |
| mbed_official | 18:da299f395b9e | 4 | * \brief SAM RTC Driver (Count Mode) |
| mbed_official | 18:da299f395b9e | 5 | * |
| mbed_official | 18:da299f395b9e | 6 | * Copyright (C) 2012-2015 Atmel Corporation. All rights reserved. |
| mbed_official | 18:da299f395b9e | 7 | * |
| mbed_official | 18:da299f395b9e | 8 | * \asf_license_start |
| mbed_official | 18:da299f395b9e | 9 | * |
| mbed_official | 18:da299f395b9e | 10 | * \page License |
| mbed_official | 18:da299f395b9e | 11 | * |
| mbed_official | 18:da299f395b9e | 12 | * Redistribution and use in source and binary forms, with or without |
| mbed_official | 18:da299f395b9e | 13 | * modification, are permitted provided that the following conditions are met: |
| mbed_official | 18:da299f395b9e | 14 | * |
| mbed_official | 18:da299f395b9e | 15 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 18:da299f395b9e | 16 | * this list of conditions and the following disclaimer. |
| mbed_official | 18:da299f395b9e | 17 | * |
| mbed_official | 18:da299f395b9e | 18 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 18:da299f395b9e | 19 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 18:da299f395b9e | 20 | * and/or other materials provided with the distribution. |
| mbed_official | 18:da299f395b9e | 21 | * |
| mbed_official | 18:da299f395b9e | 22 | * 3. The name of Atmel may not be used to endorse or promote products derived |
| mbed_official | 18:da299f395b9e | 23 | * from this software without specific prior written permission. |
| mbed_official | 18:da299f395b9e | 24 | * |
| mbed_official | 18:da299f395b9e | 25 | * 4. This software may only be redistributed and used in connection with an |
| mbed_official | 18:da299f395b9e | 26 | * Atmel microcontroller product. |
| mbed_official | 18:da299f395b9e | 27 | * |
| mbed_official | 18:da299f395b9e | 28 | * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED |
| mbed_official | 18:da299f395b9e | 29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| mbed_official | 18:da299f395b9e | 30 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
| mbed_official | 18:da299f395b9e | 31 | * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR |
| mbed_official | 18:da299f395b9e | 32 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 18:da299f395b9e | 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| mbed_official | 18:da299f395b9e | 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| mbed_official | 18:da299f395b9e | 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| mbed_official | 18:da299f395b9e | 36 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| mbed_official | 18:da299f395b9e | 37 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| mbed_official | 18:da299f395b9e | 38 | * POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 18:da299f395b9e | 39 | * |
| mbed_official | 18:da299f395b9e | 40 | * \asf_license_stop |
| mbed_official | 18:da299f395b9e | 41 | * |
| mbed_official | 18:da299f395b9e | 42 | */ |
| mbed_official | 18:da299f395b9e | 43 | /* |
| mbed_official | 18:da299f395b9e | 44 | * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> |
| mbed_official | 18:da299f395b9e | 45 | */ |
| mbed_official | 18:da299f395b9e | 46 | #include "rtc_count.h" |
| mbed_official | 18:da299f395b9e | 47 | #include <clock.h> |
| mbed_official | 18:da299f395b9e | 48 | #include <gclk.h> |
| mbed_official | 18:da299f395b9e | 49 | #include "conf_rtc.h" |
| mbed_official | 18:da299f395b9e | 50 | |
| mbed_official | 18:da299f395b9e | 51 | #if !defined(__DOXYGEN__) |
| mbed_official | 18:da299f395b9e | 52 | struct rtc_module *_rtc_instance[RTC_INST_NUM]; |
| mbed_official | 18:da299f395b9e | 53 | #endif |
| mbed_official | 18:da299f395b9e | 54 | |
| mbed_official | 18:da299f395b9e | 55 | #if !defined(RTC_CLOCK_SOURCE) |
| mbed_official | 18:da299f395b9e | 56 | # warning RTC_CLOCK_SOURCE is not defined, assuming RTC_CLOCK_SELECTION_ULP1K. |
| mbed_official | 18:da299f395b9e | 57 | # define RTC_CLOCK_SOURCE RTC_CLOCK_SELECTION_ULP1K |
| mbed_official | 18:da299f395b9e | 58 | #endif |
| mbed_official | 18:da299f395b9e | 59 | |
| mbed_official | 18:da299f395b9e | 60 | /** |
| mbed_official | 18:da299f395b9e | 61 | * \brief Determines if the hardware module(s) are currently synchronizing to the bus. |
| mbed_official | 18:da299f395b9e | 62 | * |
| mbed_official | 18:da299f395b9e | 63 | * Checks to see if the underlying hardware peripheral module(s) are currently |
| mbed_official | 18:da299f395b9e | 64 | * synchronizing across multiple clock domains to the hardware bus, This |
| mbed_official | 18:da299f395b9e | 65 | * function can be used to delay further operations on a module until such time |
| mbed_official | 18:da299f395b9e | 66 | * that it is ready, to prevent blocking delays for synchronization in the |
| mbed_official | 18:da299f395b9e | 67 | * user application. |
| mbed_official | 18:da299f395b9e | 68 | * |
| mbed_official | 18:da299f395b9e | 69 | * \param[in] module RTC hardware module |
| mbed_official | 18:da299f395b9e | 70 | * |
| mbed_official | 18:da299f395b9e | 71 | * \return Synchronization status of the underlying hardware module(s). |
| mbed_official | 18:da299f395b9e | 72 | * |
| mbed_official | 18:da299f395b9e | 73 | * \retval true if the module synchronization is ongoing |
| mbed_official | 18:da299f395b9e | 74 | * \retval false if the module has completed synchronization |
| mbed_official | 18:da299f395b9e | 75 | */ |
| mbed_official | 18:da299f395b9e | 76 | static bool rtc_count_is_syncing(struct rtc_module *const module) |
| mbed_official | 18:da299f395b9e | 77 | { |
| mbed_official | 18:da299f395b9e | 78 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 79 | Assert(module); |
| mbed_official | 18:da299f395b9e | 80 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 81 | |
| mbed_official | 18:da299f395b9e | 82 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 83 | |
| mbed_official | 18:da299f395b9e | 84 | if (rtc_module->MODE0.SYNCBUSY.reg) { |
| mbed_official | 18:da299f395b9e | 85 | return true; |
| mbed_official | 18:da299f395b9e | 86 | } |
| mbed_official | 18:da299f395b9e | 87 | |
| mbed_official | 18:da299f395b9e | 88 | return false; |
| mbed_official | 18:da299f395b9e | 89 | } |
| mbed_official | 18:da299f395b9e | 90 | |
| mbed_official | 18:da299f395b9e | 91 | /** |
| mbed_official | 18:da299f395b9e | 92 | * \brief Enables the RTC module. |
| mbed_official | 18:da299f395b9e | 93 | * |
| mbed_official | 18:da299f395b9e | 94 | * Enables the RTC module once it has been configured, ready for use. Most |
| mbed_official | 18:da299f395b9e | 95 | * module configuration parameters cannot be altered while the module is enabled. |
| mbed_official | 18:da299f395b9e | 96 | * |
| mbed_official | 18:da299f395b9e | 97 | * \param[in,out] module RTC hardware module |
| mbed_official | 18:da299f395b9e | 98 | */ |
| mbed_official | 18:da299f395b9e | 99 | void rtc_count_enable(struct rtc_module *const module) |
| mbed_official | 18:da299f395b9e | 100 | { |
| mbed_official | 18:da299f395b9e | 101 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 102 | Assert(module); |
| mbed_official | 18:da299f395b9e | 103 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 104 | |
| mbed_official | 18:da299f395b9e | 105 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 106 | |
| mbed_official | 18:da299f395b9e | 107 | #if RTC_COUNT_ASYNC == true |
| mbed_official | 18:da299f395b9e | 108 | system_interrupt_enable(SYSTEM_INTERRUPT_MODULE_RTC); |
| mbed_official | 18:da299f395b9e | 109 | #endif |
| mbed_official | 18:da299f395b9e | 110 | |
| mbed_official | 18:da299f395b9e | 111 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 112 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 113 | } |
| mbed_official | 18:da299f395b9e | 114 | |
| mbed_official | 18:da299f395b9e | 115 | /* Enable RTC module. */ |
| mbed_official | 18:da299f395b9e | 116 | rtc_module->MODE0.CTRLA.reg |= RTC_MODE0_CTRLA_ENABLE; |
| mbed_official | 18:da299f395b9e | 117 | |
| mbed_official | 18:da299f395b9e | 118 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 119 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 120 | } |
| mbed_official | 18:da299f395b9e | 121 | } |
| mbed_official | 18:da299f395b9e | 122 | |
| mbed_official | 18:da299f395b9e | 123 | /** |
| mbed_official | 18:da299f395b9e | 124 | * \brief Disables the RTC module. |
| mbed_official | 18:da299f395b9e | 125 | * |
| mbed_official | 18:da299f395b9e | 126 | * Disables the RTC module. |
| mbed_official | 18:da299f395b9e | 127 | * |
| mbed_official | 18:da299f395b9e | 128 | * \param[in,out] module RTC hardware module |
| mbed_official | 18:da299f395b9e | 129 | */ |
| mbed_official | 18:da299f395b9e | 130 | void rtc_count_disable(struct rtc_module *const module) |
| mbed_official | 18:da299f395b9e | 131 | { |
| mbed_official | 18:da299f395b9e | 132 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 133 | Assert(module); |
| mbed_official | 18:da299f395b9e | 134 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 135 | |
| mbed_official | 18:da299f395b9e | 136 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 137 | |
| mbed_official | 18:da299f395b9e | 138 | #if RTC_COUNT_ASYNC == true |
| mbed_official | 18:da299f395b9e | 139 | system_interrupt_disable(SYSTEM_INTERRUPT_MODULE_RTC); |
| mbed_official | 18:da299f395b9e | 140 | #endif |
| mbed_official | 18:da299f395b9e | 141 | |
| mbed_official | 18:da299f395b9e | 142 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 143 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 144 | } |
| mbed_official | 18:da299f395b9e | 145 | |
| mbed_official | 18:da299f395b9e | 146 | /* Disable RTC module. */ |
| mbed_official | 18:da299f395b9e | 147 | rtc_module->MODE0.CTRLA.reg &= ~RTC_MODE0_CTRLA_ENABLE; |
| mbed_official | 18:da299f395b9e | 148 | |
| mbed_official | 18:da299f395b9e | 149 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 150 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 151 | } |
| mbed_official | 18:da299f395b9e | 152 | } |
| mbed_official | 18:da299f395b9e | 153 | |
| mbed_official | 18:da299f395b9e | 154 | /** |
| mbed_official | 18:da299f395b9e | 155 | * \brief Resets the RTC module. |
| mbed_official | 18:da299f395b9e | 156 | * Resets the RTC to hardware defaults. |
| mbed_official | 18:da299f395b9e | 157 | * |
| mbed_official | 18:da299f395b9e | 158 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 159 | */ |
| mbed_official | 18:da299f395b9e | 160 | void rtc_count_reset(struct rtc_module *const module) |
| mbed_official | 18:da299f395b9e | 161 | { |
| mbed_official | 18:da299f395b9e | 162 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 163 | Assert(module); |
| mbed_official | 18:da299f395b9e | 164 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 165 | |
| mbed_official | 18:da299f395b9e | 166 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 167 | |
| mbed_official | 18:da299f395b9e | 168 | /* Disable module before reset. */ |
| mbed_official | 18:da299f395b9e | 169 | rtc_count_disable(module); |
| mbed_official | 18:da299f395b9e | 170 | |
| mbed_official | 18:da299f395b9e | 171 | #if RTC_COUNT_ASYNC == true |
| mbed_official | 18:da299f395b9e | 172 | module->registered_callback = 0; |
| mbed_official | 18:da299f395b9e | 173 | module->enabled_callback = 0; |
| mbed_official | 18:da299f395b9e | 174 | #endif |
| mbed_official | 18:da299f395b9e | 175 | |
| mbed_official | 18:da299f395b9e | 176 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 177 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 178 | } |
| mbed_official | 18:da299f395b9e | 179 | |
| mbed_official | 18:da299f395b9e | 180 | /* Initiate software reset. */ |
| mbed_official | 18:da299f395b9e | 181 | rtc_module->MODE0.CTRLA.reg |= RTC_MODE0_CTRLA_SWRST; |
| mbed_official | 18:da299f395b9e | 182 | |
| mbed_official | 18:da299f395b9e | 183 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 184 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 185 | } |
| mbed_official | 18:da299f395b9e | 186 | } |
| mbed_official | 18:da299f395b9e | 187 | |
| mbed_official | 18:da299f395b9e | 188 | /** |
| mbed_official | 18:da299f395b9e | 189 | * \internal Applies the given configuration. |
| mbed_official | 18:da299f395b9e | 190 | * |
| mbed_official | 18:da299f395b9e | 191 | * Sets the configurations given from the configuration structure to the |
| mbed_official | 18:da299f395b9e | 192 | * hardware module |
| mbed_official | 18:da299f395b9e | 193 | * |
| mbed_official | 18:da299f395b9e | 194 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 195 | * \param[in] config Pointer to the configuration structure |
| mbed_official | 18:da299f395b9e | 196 | * |
| mbed_official | 18:da299f395b9e | 197 | * \return Status of the configuration procedure. |
| mbed_official | 18:da299f395b9e | 198 | * \retval STATUS_OK RTC configurations was set successfully |
| mbed_official | 18:da299f395b9e | 199 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were given |
| mbed_official | 18:da299f395b9e | 200 | */ |
| mbed_official | 18:da299f395b9e | 201 | static enum status_code _rtc_count_set_config( |
| mbed_official | 18:da299f395b9e | 202 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 203 | const struct rtc_count_config *const config) |
| mbed_official | 18:da299f395b9e | 204 | { |
| mbed_official | 18:da299f395b9e | 205 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 206 | Assert(module); |
| mbed_official | 18:da299f395b9e | 207 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 208 | |
| mbed_official | 18:da299f395b9e | 209 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 210 | |
| mbed_official | 18:da299f395b9e | 211 | #if SAML21 |
| mbed_official | 18:da299f395b9e | 212 | rtc_module->MODE0.CTRLA.reg = RTC_MODE0_CTRLA_MODE(0) | config->prescaler |
| mbed_official | 18:da299f395b9e | 213 | | (config->enable_read_sync << RTC_MODE0_CTRLA_SYNCDIS_Pos); |
| mbed_official | 18:da299f395b9e | 214 | #endif |
| mbed_official | 18:da299f395b9e | 215 | #if (SAMC20) || (SAMC21) |
| mbed_official | 18:da299f395b9e | 216 | rtc_module->MODE0.CTRLA.reg = RTC_MODE0_CTRLA_MODE(0) | config->prescaler |
| mbed_official | 18:da299f395b9e | 217 | | (config->enable_read_sync << RTC_MODE0_CTRLA_COUNTSYNC_Pos); |
| mbed_official | 18:da299f395b9e | 218 | #endif |
| mbed_official | 18:da299f395b9e | 219 | |
| mbed_official | 18:da299f395b9e | 220 | /* Set mode and clear on match if applicable. */ |
| mbed_official | 18:da299f395b9e | 221 | switch (config->mode) { |
| mbed_official | 18:da299f395b9e | 222 | case RTC_COUNT_MODE_32BIT: |
| mbed_official | 18:da299f395b9e | 223 | /* Set 32-bit mode and clear on match if applicable. */ |
| mbed_official | 18:da299f395b9e | 224 | rtc_module->MODE0.CTRLA.reg |= RTC_MODE0_CTRLA_MODE(0); |
| mbed_official | 18:da299f395b9e | 225 | |
| mbed_official | 18:da299f395b9e | 226 | /* Check if clear on compare match should be set. */ |
| mbed_official | 18:da299f395b9e | 227 | if (config->clear_on_match) { |
| mbed_official | 18:da299f395b9e | 228 | /* Set clear on match. */ |
| mbed_official | 18:da299f395b9e | 229 | rtc_module->MODE0.CTRLA.reg |= RTC_MODE0_CTRLA_MATCHCLR; |
| mbed_official | 18:da299f395b9e | 230 | } |
| mbed_official | 18:da299f395b9e | 231 | /* Set compare values. */ |
| mbed_official | 18:da299f395b9e | 232 | for (uint8_t i = 0; i < RTC_COMP32_NUM; i++) { |
| mbed_official | 18:da299f395b9e | 233 | rtc_count_set_compare(module, config->compare_values[i], |
| mbed_official | 18:da299f395b9e | 234 | (enum rtc_count_compare)i); |
| mbed_official | 18:da299f395b9e | 235 | } |
| mbed_official | 18:da299f395b9e | 236 | break; |
| mbed_official | 18:da299f395b9e | 237 | |
| mbed_official | 18:da299f395b9e | 238 | case RTC_COUNT_MODE_16BIT: |
| mbed_official | 18:da299f395b9e | 239 | /* Set 16bit mode. */ |
| mbed_official | 18:da299f395b9e | 240 | rtc_module->MODE1.CTRLA.reg |= RTC_MODE1_CTRLA_MODE(1); |
| mbed_official | 18:da299f395b9e | 241 | |
| mbed_official | 18:da299f395b9e | 242 | /* Check if match on clear is set, and return invalid |
| mbed_official | 18:da299f395b9e | 243 | * argument if set. */ |
| mbed_official | 18:da299f395b9e | 244 | if (config->clear_on_match) { |
| mbed_official | 18:da299f395b9e | 245 | Assert(false); |
| mbed_official | 18:da299f395b9e | 246 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 247 | } |
| mbed_official | 18:da299f395b9e | 248 | /* Set compare values. */ |
| mbed_official | 18:da299f395b9e | 249 | for (uint8_t i = 0; i < RTC_NUM_OF_COMP16; i++) { |
| mbed_official | 18:da299f395b9e | 250 | rtc_count_set_compare(module, config->compare_values[i], |
| mbed_official | 18:da299f395b9e | 251 | (enum rtc_count_compare)i); |
| mbed_official | 18:da299f395b9e | 252 | } |
| mbed_official | 18:da299f395b9e | 253 | break; |
| mbed_official | 18:da299f395b9e | 254 | default: |
| mbed_official | 18:da299f395b9e | 255 | Assert(false); |
| mbed_official | 18:da299f395b9e | 256 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 257 | } |
| mbed_official | 18:da299f395b9e | 258 | |
| mbed_official | 18:da299f395b9e | 259 | /* Return status OK if everything was configured. */ |
| mbed_official | 18:da299f395b9e | 260 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 261 | } |
| mbed_official | 18:da299f395b9e | 262 | |
| mbed_official | 18:da299f395b9e | 263 | /** |
| mbed_official | 18:da299f395b9e | 264 | * \brief Initializes the RTC module with given configurations. |
| mbed_official | 18:da299f395b9e | 265 | * |
| mbed_official | 18:da299f395b9e | 266 | * Initializes the module, setting up all given configurations to provide |
| mbed_official | 18:da299f395b9e | 267 | * the desired functionality of the RTC. |
| mbed_official | 18:da299f395b9e | 268 | * |
| mbed_official | 18:da299f395b9e | 269 | * \param[out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 270 | * \param[in] hw Pointer to hardware instance |
| mbed_official | 18:da299f395b9e | 271 | * \param[in] config Pointer to the configuration structure |
| mbed_official | 18:da299f395b9e | 272 | * |
| mbed_official | 18:da299f395b9e | 273 | * \return Status of the initialization procedure. |
| mbed_official | 18:da299f395b9e | 274 | * \retval STATUS_OK If the initialization was run stressfully |
| mbed_official | 18:da299f395b9e | 275 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were given |
| mbed_official | 18:da299f395b9e | 276 | */ |
| mbed_official | 18:da299f395b9e | 277 | enum status_code rtc_count_init( |
| mbed_official | 18:da299f395b9e | 278 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 279 | Rtc *const hw, |
| mbed_official | 18:da299f395b9e | 280 | const struct rtc_count_config *const config) |
| mbed_official | 18:da299f395b9e | 281 | { |
| mbed_official | 18:da299f395b9e | 282 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 283 | Assert(module); |
| mbed_official | 18:da299f395b9e | 284 | Assert(hw); |
| mbed_official | 18:da299f395b9e | 285 | Assert(config); |
| mbed_official | 18:da299f395b9e | 286 | |
| mbed_official | 18:da299f395b9e | 287 | /* Initialize device instance */ |
| mbed_official | 18:da299f395b9e | 288 | module->hw = hw; |
| mbed_official | 18:da299f395b9e | 289 | |
| mbed_official | 18:da299f395b9e | 290 | /* Turn on the digital interface clock */ |
| mbed_official | 18:da299f395b9e | 291 | system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBA, MCLK_APBAMASK_RTC); |
| mbed_official | 18:da299f395b9e | 292 | |
| mbed_official | 18:da299f395b9e | 293 | /* Select RTC clock */ |
| mbed_official | 18:da299f395b9e | 294 | OSC32KCTRL->RTCCTRL.reg = RTC_CLOCK_SOURCE; |
| mbed_official | 18:da299f395b9e | 295 | |
| mbed_official | 18:da299f395b9e | 296 | /* Reset module to hardware defaults. */ |
| mbed_official | 18:da299f395b9e | 297 | rtc_count_reset(module); |
| mbed_official | 18:da299f395b9e | 298 | |
| mbed_official | 18:da299f395b9e | 299 | /* Save conf_struct internally for continued use. */ |
| mbed_official | 18:da299f395b9e | 300 | module->mode = config->mode; |
| mbed_official | 18:da299f395b9e | 301 | |
| mbed_official | 18:da299f395b9e | 302 | # if (RTC_INST_NUM == 1) |
| mbed_official | 18:da299f395b9e | 303 | _rtc_instance[0] = module; |
| mbed_official | 18:da299f395b9e | 304 | # else |
| mbed_official | 18:da299f395b9e | 305 | /* Register this instance for callbacks*/ |
| mbed_official | 18:da299f395b9e | 306 | _rtc_instance[_rtc_get_inst_index(hw)] = module; |
| mbed_official | 18:da299f395b9e | 307 | # endif |
| mbed_official | 18:da299f395b9e | 308 | |
| mbed_official | 18:da299f395b9e | 309 | /* Set config and return status. */ |
| mbed_official | 18:da299f395b9e | 310 | return _rtc_count_set_config(module, config); |
| mbed_official | 18:da299f395b9e | 311 | } |
| mbed_official | 18:da299f395b9e | 312 | |
| mbed_official | 18:da299f395b9e | 313 | /** |
| mbed_official | 18:da299f395b9e | 314 | * \brief Set the current count value to desired value. |
| mbed_official | 18:da299f395b9e | 315 | * |
| mbed_official | 18:da299f395b9e | 316 | * Sets the value of the counter to the specified value. |
| mbed_official | 18:da299f395b9e | 317 | * |
| mbed_official | 18:da299f395b9e | 318 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 319 | * \param[in] count_value The value to be set in count register |
| mbed_official | 18:da299f395b9e | 320 | * |
| mbed_official | 18:da299f395b9e | 321 | * \return Status of setting the register. |
| mbed_official | 18:da299f395b9e | 322 | * \retval STATUS_OK If everything was executed correctly |
| mbed_official | 18:da299f395b9e | 323 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
| mbed_official | 18:da299f395b9e | 324 | */ |
| mbed_official | 18:da299f395b9e | 325 | enum status_code rtc_count_set_count( |
| mbed_official | 18:da299f395b9e | 326 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 327 | const uint32_t count_value) |
| mbed_official | 18:da299f395b9e | 328 | { |
| mbed_official | 18:da299f395b9e | 329 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 330 | Assert(module); |
| mbed_official | 18:da299f395b9e | 331 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 332 | |
| mbed_official | 18:da299f395b9e | 333 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 334 | |
| mbed_official | 18:da299f395b9e | 335 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 336 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 337 | } |
| mbed_official | 18:da299f395b9e | 338 | |
| mbed_official | 18:da299f395b9e | 339 | /* Set count according to mode */ |
| mbed_official | 18:da299f395b9e | 340 | switch(module->mode) { |
| mbed_official | 18:da299f395b9e | 341 | case RTC_COUNT_MODE_32BIT: |
| mbed_official | 18:da299f395b9e | 342 | /* Write value to register. */ |
| mbed_official | 18:da299f395b9e | 343 | rtc_module->MODE0.COUNT.reg = count_value; |
| mbed_official | 18:da299f395b9e | 344 | break; |
| mbed_official | 18:da299f395b9e | 345 | case RTC_COUNT_MODE_16BIT: |
| mbed_official | 18:da299f395b9e | 346 | /* Check if 16-bit value is provided. */ |
| mbed_official | 18:da299f395b9e | 347 | if(count_value > 0xffff) { |
| mbed_official | 18:da299f395b9e | 348 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 349 | } |
| mbed_official | 18:da299f395b9e | 350 | |
| mbed_official | 18:da299f395b9e | 351 | /* Write value to register. */ |
| mbed_official | 18:da299f395b9e | 352 | rtc_module->MODE1.COUNT.reg = (uint32_t)count_value; |
| mbed_official | 18:da299f395b9e | 353 | |
| mbed_official | 18:da299f395b9e | 354 | break; |
| mbed_official | 18:da299f395b9e | 355 | |
| mbed_official | 18:da299f395b9e | 356 | default: |
| mbed_official | 18:da299f395b9e | 357 | Assert(false); |
| mbed_official | 18:da299f395b9e | 358 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 359 | } |
| mbed_official | 18:da299f395b9e | 360 | |
| mbed_official | 18:da299f395b9e | 361 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 362 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 363 | } |
| mbed_official | 18:da299f395b9e | 364 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 365 | } |
| mbed_official | 18:da299f395b9e | 366 | |
| mbed_official | 18:da299f395b9e | 367 | /** |
| mbed_official | 18:da299f395b9e | 368 | * \brief Get the current count value. |
| mbed_official | 18:da299f395b9e | 369 | * |
| mbed_official | 18:da299f395b9e | 370 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 371 | * |
| mbed_official | 18:da299f395b9e | 372 | * Returns the current count value. |
| mbed_official | 18:da299f395b9e | 373 | * |
| mbed_official | 18:da299f395b9e | 374 | * \return The current counter value as a 32-bit unsigned integer. |
| mbed_official | 18:da299f395b9e | 375 | */ |
| mbed_official | 18:da299f395b9e | 376 | uint32_t rtc_count_get_count(struct rtc_module *const module) |
| mbed_official | 18:da299f395b9e | 377 | { |
| mbed_official | 18:da299f395b9e | 378 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 379 | Assert(module); |
| mbed_official | 18:da299f395b9e | 380 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 381 | |
| mbed_official | 18:da299f395b9e | 382 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 383 | |
| mbed_official | 18:da299f395b9e | 384 | /* Initialize return value. */ |
| mbed_official | 18:da299f395b9e | 385 | uint32_t ret_val; |
| mbed_official | 18:da299f395b9e | 386 | |
| mbed_official | 18:da299f395b9e | 387 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 388 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 389 | } |
| mbed_official | 18:da299f395b9e | 390 | |
| mbed_official | 18:da299f395b9e | 391 | /* Read value based on mode. */ |
| mbed_official | 18:da299f395b9e | 392 | switch (module->mode) { |
| mbed_official | 18:da299f395b9e | 393 | case RTC_COUNT_MODE_32BIT: |
| mbed_official | 18:da299f395b9e | 394 | /* Return count value in 32-bit mode. */ |
| mbed_official | 18:da299f395b9e | 395 | ret_val = rtc_module->MODE0.COUNT.reg; |
| mbed_official | 18:da299f395b9e | 396 | |
| mbed_official | 18:da299f395b9e | 397 | break; |
| mbed_official | 18:da299f395b9e | 398 | |
| mbed_official | 18:da299f395b9e | 399 | case RTC_COUNT_MODE_16BIT: |
| mbed_official | 18:da299f395b9e | 400 | /* Return count value in 16-bit mode. */ |
| mbed_official | 18:da299f395b9e | 401 | ret_val = (uint32_t)rtc_module->MODE1.COUNT.reg; |
| mbed_official | 18:da299f395b9e | 402 | |
| mbed_official | 18:da299f395b9e | 403 | break; |
| mbed_official | 18:da299f395b9e | 404 | |
| mbed_official | 18:da299f395b9e | 405 | default: |
| mbed_official | 18:da299f395b9e | 406 | Assert(false); |
| mbed_official | 18:da299f395b9e | 407 | /* Counter not initialized. Assume counter value 0.*/ |
| mbed_official | 18:da299f395b9e | 408 | ret_val = 0; |
| mbed_official | 18:da299f395b9e | 409 | break; |
| mbed_official | 18:da299f395b9e | 410 | } |
| mbed_official | 18:da299f395b9e | 411 | |
| mbed_official | 18:da299f395b9e | 412 | return ret_val; |
| mbed_official | 18:da299f395b9e | 413 | } |
| mbed_official | 18:da299f395b9e | 414 | |
| mbed_official | 18:da299f395b9e | 415 | /** |
| mbed_official | 18:da299f395b9e | 416 | * \brief Set the compare value for the specified compare. |
| mbed_official | 18:da299f395b9e | 417 | * |
| mbed_official | 18:da299f395b9e | 418 | * Sets the value specified by the implementer to the requested compare. |
| mbed_official | 18:da299f395b9e | 419 | * |
| mbed_official | 18:da299f395b9e | 420 | * \note Compare 4 and 5 are only available in 16-bit mode. |
| mbed_official | 18:da299f395b9e | 421 | * |
| mbed_official | 18:da299f395b9e | 422 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 423 | * \param[in] comp_value The value to be written to the compare |
| mbed_official | 18:da299f395b9e | 424 | * \param[in] comp_index Index of the compare to set |
| mbed_official | 18:da299f395b9e | 425 | * |
| mbed_official | 18:da299f395b9e | 426 | * \return Status indicating if compare was successfully set. |
| mbed_official | 18:da299f395b9e | 427 | * \retval STATUS_OK If compare was successfully set |
| mbed_official | 18:da299f395b9e | 428 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
| mbed_official | 18:da299f395b9e | 429 | * \retval STATUS_ERR_BAD_FORMAT If the module was not initialized in a mode |
| mbed_official | 18:da299f395b9e | 430 | */ |
| mbed_official | 18:da299f395b9e | 431 | enum status_code rtc_count_set_compare( |
| mbed_official | 18:da299f395b9e | 432 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 433 | const uint32_t comp_value, |
| mbed_official | 18:da299f395b9e | 434 | const enum rtc_count_compare comp_index) |
| mbed_official | 18:da299f395b9e | 435 | { |
| mbed_official | 18:da299f395b9e | 436 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 437 | Assert(module); |
| mbed_official | 18:da299f395b9e | 438 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 439 | |
| mbed_official | 18:da299f395b9e | 440 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 441 | |
| mbed_official | 18:da299f395b9e | 442 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 443 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 444 | } |
| mbed_official | 18:da299f395b9e | 445 | |
| mbed_official | 18:da299f395b9e | 446 | /* Set compare values based on operation mode. */ |
| mbed_official | 18:da299f395b9e | 447 | switch (module->mode) { |
| mbed_official | 18:da299f395b9e | 448 | case RTC_COUNT_MODE_32BIT: |
| mbed_official | 18:da299f395b9e | 449 | /* Check sanity of comp_index. */ |
| mbed_official | 18:da299f395b9e | 450 | if ((uint32_t)comp_index > RTC_COMP32_NUM) { |
| mbed_official | 18:da299f395b9e | 451 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 452 | } |
| mbed_official | 18:da299f395b9e | 453 | |
| mbed_official | 18:da299f395b9e | 454 | /* Set compare value for COMP. */ |
| mbed_official | 18:da299f395b9e | 455 | rtc_module->MODE0.COMP[comp_index].reg = comp_value; |
| mbed_official | 18:da299f395b9e | 456 | |
| mbed_official | 18:da299f395b9e | 457 | break; |
| mbed_official | 18:da299f395b9e | 458 | |
| mbed_official | 18:da299f395b9e | 459 | case RTC_COUNT_MODE_16BIT: |
| mbed_official | 18:da299f395b9e | 460 | /* Check sanity of comp_index. */ |
| mbed_official | 18:da299f395b9e | 461 | if ((uint32_t)comp_index > RTC_NUM_OF_COMP16) { |
| mbed_official | 18:da299f395b9e | 462 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 463 | } |
| mbed_official | 18:da299f395b9e | 464 | |
| mbed_official | 18:da299f395b9e | 465 | /* Check that 16-bit value is provided. */ |
| mbed_official | 18:da299f395b9e | 466 | if (comp_value > 0xffff) { |
| mbed_official | 18:da299f395b9e | 467 | Assert(false); |
| mbed_official | 18:da299f395b9e | 468 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 469 | } |
| mbed_official | 18:da299f395b9e | 470 | |
| mbed_official | 18:da299f395b9e | 471 | /* Set compare value for COMP. */ |
| mbed_official | 18:da299f395b9e | 472 | rtc_module->MODE1.COMP[comp_index].reg = comp_value & 0xffff; |
| mbed_official | 18:da299f395b9e | 473 | |
| mbed_official | 18:da299f395b9e | 474 | break; |
| mbed_official | 18:da299f395b9e | 475 | |
| mbed_official | 18:da299f395b9e | 476 | default: |
| mbed_official | 18:da299f395b9e | 477 | Assert(false); |
| mbed_official | 18:da299f395b9e | 478 | return STATUS_ERR_BAD_FORMAT; |
| mbed_official | 18:da299f395b9e | 479 | } |
| mbed_official | 18:da299f395b9e | 480 | |
| mbed_official | 18:da299f395b9e | 481 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 482 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 483 | } |
| mbed_official | 18:da299f395b9e | 484 | |
| mbed_official | 18:da299f395b9e | 485 | /* Return status if everything is OK. */ |
| mbed_official | 18:da299f395b9e | 486 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 487 | } |
| mbed_official | 18:da299f395b9e | 488 | |
| mbed_official | 18:da299f395b9e | 489 | /** |
| mbed_official | 18:da299f395b9e | 490 | * \brief Get the current compare value of specified compare. |
| mbed_official | 18:da299f395b9e | 491 | * |
| mbed_official | 18:da299f395b9e | 492 | * Retrieves the current value of the specified compare. |
| mbed_official | 18:da299f395b9e | 493 | * |
| mbed_official | 18:da299f395b9e | 494 | * \note Compare 4 and 5 are only available in 16-bit mode. |
| mbed_official | 18:da299f395b9e | 495 | * |
| mbed_official | 18:da299f395b9e | 496 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 497 | * \param[out] comp_value Pointer to 32-bit integer that will be populated with |
| mbed_official | 18:da299f395b9e | 498 | * the current compare value |
| mbed_official | 18:da299f395b9e | 499 | * \param[in] comp_index Index of compare to check |
| mbed_official | 18:da299f395b9e | 500 | * |
| mbed_official | 18:da299f395b9e | 501 | * \return Status of the reading procedure. |
| mbed_official | 18:da299f395b9e | 502 | * \retval STATUS_OK If the value was read correctly |
| mbed_official | 18:da299f395b9e | 503 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
| mbed_official | 18:da299f395b9e | 504 | * \retval STATUS_ERR_BAD_FORMAT If the module was not initialized in a mode |
| mbed_official | 18:da299f395b9e | 505 | */ |
| mbed_official | 18:da299f395b9e | 506 | enum status_code rtc_count_get_compare( |
| mbed_official | 18:da299f395b9e | 507 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 508 | uint32_t *const comp_value, |
| mbed_official | 18:da299f395b9e | 509 | const enum rtc_count_compare comp_index) |
| mbed_official | 18:da299f395b9e | 510 | { |
| mbed_official | 18:da299f395b9e | 511 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 512 | Assert(module); |
| mbed_official | 18:da299f395b9e | 513 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 514 | |
| mbed_official | 18:da299f395b9e | 515 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 516 | |
| mbed_official | 18:da299f395b9e | 517 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 518 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 519 | } |
| mbed_official | 18:da299f395b9e | 520 | |
| mbed_official | 18:da299f395b9e | 521 | switch (module->mode) { |
| mbed_official | 18:da299f395b9e | 522 | case RTC_COUNT_MODE_32BIT: |
| mbed_official | 18:da299f395b9e | 523 | /* Check sanity of comp_index. */ |
| mbed_official | 18:da299f395b9e | 524 | if ((uint32_t)comp_index > RTC_COMP32_NUM) { |
| mbed_official | 18:da299f395b9e | 525 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 526 | } |
| mbed_official | 18:da299f395b9e | 527 | |
| mbed_official | 18:da299f395b9e | 528 | /* Get compare value for COMP. */ |
| mbed_official | 18:da299f395b9e | 529 | *comp_value = rtc_module->MODE0.COMP[comp_index].reg; |
| mbed_official | 18:da299f395b9e | 530 | |
| mbed_official | 18:da299f395b9e | 531 | break; |
| mbed_official | 18:da299f395b9e | 532 | |
| mbed_official | 18:da299f395b9e | 533 | case RTC_COUNT_MODE_16BIT: |
| mbed_official | 18:da299f395b9e | 534 | /* Check sanity of comp_index. */ |
| mbed_official | 18:da299f395b9e | 535 | if ((uint32_t)comp_index > RTC_NUM_OF_COMP16) { |
| mbed_official | 18:da299f395b9e | 536 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 537 | } |
| mbed_official | 18:da299f395b9e | 538 | |
| mbed_official | 18:da299f395b9e | 539 | /* Get compare value for COMP. */ |
| mbed_official | 18:da299f395b9e | 540 | *comp_value = (uint32_t)rtc_module->MODE1.COMP[comp_index].reg; |
| mbed_official | 18:da299f395b9e | 541 | |
| mbed_official | 18:da299f395b9e | 542 | break; |
| mbed_official | 18:da299f395b9e | 543 | |
| mbed_official | 18:da299f395b9e | 544 | default: |
| mbed_official | 18:da299f395b9e | 545 | Assert(false); |
| mbed_official | 18:da299f395b9e | 546 | return STATUS_ERR_BAD_FORMAT; |
| mbed_official | 18:da299f395b9e | 547 | } |
| mbed_official | 18:da299f395b9e | 548 | /* Return status showing everything is OK. */ |
| mbed_official | 18:da299f395b9e | 549 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 550 | } |
| mbed_official | 18:da299f395b9e | 551 | |
| mbed_official | 18:da299f395b9e | 552 | /** |
| mbed_official | 18:da299f395b9e | 553 | * \brief Retrieves the value of period. |
| mbed_official | 18:da299f395b9e | 554 | * |
| mbed_official | 18:da299f395b9e | 555 | * Retrieves the value of the period for the 16-bit mode counter. |
| mbed_official | 18:da299f395b9e | 556 | * |
| mbed_official | 18:da299f395b9e | 557 | * \note Only available in 16-bit mode. |
| mbed_official | 18:da299f395b9e | 558 | * |
| mbed_official | 18:da299f395b9e | 559 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 560 | * \param[out] period_value Pointer to value for return argument |
| mbed_official | 18:da299f395b9e | 561 | * |
| mbed_official | 18:da299f395b9e | 562 | * \return Status of getting the period value. |
| mbed_official | 18:da299f395b9e | 563 | * \retval STATUS_OK If the period value was read correctly |
| mbed_official | 18:da299f395b9e | 564 | * \retval STATUS_ERR_UNSUPPORTED_DEV If incorrect mode was set |
| mbed_official | 18:da299f395b9e | 565 | */ |
| mbed_official | 18:da299f395b9e | 566 | enum status_code rtc_count_get_period( |
| mbed_official | 18:da299f395b9e | 567 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 568 | uint16_t *const period_value) |
| mbed_official | 18:da299f395b9e | 569 | { |
| mbed_official | 18:da299f395b9e | 570 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 571 | Assert(module); |
| mbed_official | 18:da299f395b9e | 572 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 573 | |
| mbed_official | 18:da299f395b9e | 574 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 575 | |
| mbed_official | 18:da299f395b9e | 576 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 577 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 578 | } |
| mbed_official | 18:da299f395b9e | 579 | |
| mbed_official | 18:da299f395b9e | 580 | /* Check that correct mode is set. */ |
| mbed_official | 18:da299f395b9e | 581 | if (module->mode != RTC_COUNT_MODE_16BIT) { |
| mbed_official | 18:da299f395b9e | 582 | return STATUS_ERR_UNSUPPORTED_DEV; |
| mbed_official | 18:da299f395b9e | 583 | } |
| mbed_official | 18:da299f395b9e | 584 | |
| mbed_official | 18:da299f395b9e | 585 | /* Returns the value. */ |
| mbed_official | 18:da299f395b9e | 586 | *period_value = rtc_module->MODE1.PER.reg; |
| mbed_official | 18:da299f395b9e | 587 | |
| mbed_official | 18:da299f395b9e | 588 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 589 | } |
| mbed_official | 18:da299f395b9e | 590 | |
| mbed_official | 18:da299f395b9e | 591 | /** |
| mbed_official | 18:da299f395b9e | 592 | * \brief Set the given value to the period. |
| mbed_official | 18:da299f395b9e | 593 | * |
| mbed_official | 18:da299f395b9e | 594 | * Sets the given value to the period. |
| mbed_official | 18:da299f395b9e | 595 | * |
| mbed_official | 18:da299f395b9e | 596 | * \note Only available in 16-bit mode. |
| mbed_official | 18:da299f395b9e | 597 | * |
| mbed_official | 18:da299f395b9e | 598 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 599 | * \param[in] period_value The value to set to the period |
| mbed_official | 18:da299f395b9e | 600 | * |
| mbed_official | 18:da299f395b9e | 601 | * \return Status of setting the period value. |
| mbed_official | 18:da299f395b9e | 602 | * \retval STATUS_OK If the period was set correctly |
| mbed_official | 18:da299f395b9e | 603 | * \retval STATUS_ERR_UNSUPPORTED_DEV If module is not operated in 16-bit mode |
| mbed_official | 18:da299f395b9e | 604 | */ |
| mbed_official | 18:da299f395b9e | 605 | enum status_code rtc_count_set_period( |
| mbed_official | 18:da299f395b9e | 606 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 607 | const uint16_t period_value) |
| mbed_official | 18:da299f395b9e | 608 | { |
| mbed_official | 18:da299f395b9e | 609 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 610 | Assert(module); |
| mbed_official | 18:da299f395b9e | 611 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 612 | |
| mbed_official | 18:da299f395b9e | 613 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 614 | |
| mbed_official | 18:da299f395b9e | 615 | /* Check that correct mode is set. */ |
| mbed_official | 18:da299f395b9e | 616 | if (module->mode != RTC_COUNT_MODE_16BIT) { |
| mbed_official | 18:da299f395b9e | 617 | return STATUS_ERR_UNSUPPORTED_DEV; |
| mbed_official | 18:da299f395b9e | 618 | } |
| mbed_official | 18:da299f395b9e | 619 | |
| mbed_official | 18:da299f395b9e | 620 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 621 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 622 | } |
| mbed_official | 18:da299f395b9e | 623 | |
| mbed_official | 18:da299f395b9e | 624 | /* Write value to register. */ |
| mbed_official | 18:da299f395b9e | 625 | rtc_module->MODE1.PER.reg = period_value; |
| mbed_official | 18:da299f395b9e | 626 | |
| mbed_official | 18:da299f395b9e | 627 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 628 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 629 | } |
| mbed_official | 18:da299f395b9e | 630 | |
| mbed_official | 18:da299f395b9e | 631 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 632 | } |
| mbed_official | 18:da299f395b9e | 633 | |
| mbed_official | 18:da299f395b9e | 634 | /** |
| mbed_official | 18:da299f395b9e | 635 | * \brief Check if RTC compare match has occurred. |
| mbed_official | 18:da299f395b9e | 636 | * |
| mbed_official | 18:da299f395b9e | 637 | * Checks the compare flag to see if a match has occurred. The compare flag is |
| mbed_official | 18:da299f395b9e | 638 | * set when there is a compare match between counter and the compare. |
| mbed_official | 18:da299f395b9e | 639 | * |
| mbed_official | 18:da299f395b9e | 640 | * \note Compare 4 and 5 are only available in 16-bit mode. |
| mbed_official | 18:da299f395b9e | 641 | * |
| mbed_official | 18:da299f395b9e | 642 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 643 | * \param[in] comp_index Index of compare to check current flag |
| mbed_official | 18:da299f395b9e | 644 | */ |
| mbed_official | 18:da299f395b9e | 645 | bool rtc_count_is_compare_match( |
| mbed_official | 18:da299f395b9e | 646 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 647 | const enum rtc_count_compare comp_index) |
| mbed_official | 18:da299f395b9e | 648 | { |
| mbed_official | 18:da299f395b9e | 649 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 650 | Assert(module); |
| mbed_official | 18:da299f395b9e | 651 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 652 | |
| mbed_official | 18:da299f395b9e | 653 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 654 | |
| mbed_official | 18:da299f395b9e | 655 | /* Check sanity. */ |
| mbed_official | 18:da299f395b9e | 656 | switch (module->mode) { |
| mbed_official | 18:da299f395b9e | 657 | case RTC_COUNT_MODE_32BIT: |
| mbed_official | 18:da299f395b9e | 658 | /* Check sanity for 32-bit mode. */ |
| mbed_official | 18:da299f395b9e | 659 | if (comp_index > RTC_COMP32_NUM) { |
| mbed_official | 18:da299f395b9e | 660 | return false; |
| mbed_official | 18:da299f395b9e | 661 | } |
| mbed_official | 18:da299f395b9e | 662 | |
| mbed_official | 18:da299f395b9e | 663 | break; |
| mbed_official | 18:da299f395b9e | 664 | |
| mbed_official | 18:da299f395b9e | 665 | case RTC_COUNT_MODE_16BIT: |
| mbed_official | 18:da299f395b9e | 666 | /* Check sanity for 16-bit mode. */ |
| mbed_official | 18:da299f395b9e | 667 | if (comp_index > RTC_NUM_OF_COMP16) { |
| mbed_official | 18:da299f395b9e | 668 | return false; |
| mbed_official | 18:da299f395b9e | 669 | } |
| mbed_official | 18:da299f395b9e | 670 | |
| mbed_official | 18:da299f395b9e | 671 | break; |
| mbed_official | 18:da299f395b9e | 672 | |
| mbed_official | 18:da299f395b9e | 673 | default: |
| mbed_official | 18:da299f395b9e | 674 | Assert(false); |
| mbed_official | 18:da299f395b9e | 675 | return false; |
| mbed_official | 18:da299f395b9e | 676 | } |
| mbed_official | 18:da299f395b9e | 677 | |
| mbed_official | 18:da299f395b9e | 678 | /* Set status of INTFLAG as return argument. */ |
| mbed_official | 18:da299f395b9e | 679 | return (rtc_module->MODE0.INTFLAG.reg & RTC_MODE1_INTFLAG_CMP(1 << comp_index)) ? true : false; |
| mbed_official | 18:da299f395b9e | 680 | } |
| mbed_official | 18:da299f395b9e | 681 | |
| mbed_official | 18:da299f395b9e | 682 | /** |
| mbed_official | 18:da299f395b9e | 683 | * \brief Clears RTC compare match flag. |
| mbed_official | 18:da299f395b9e | 684 | * |
| mbed_official | 18:da299f395b9e | 685 | * Clears the compare flag. The compare flag is set when there is a compare |
| mbed_official | 18:da299f395b9e | 686 | * match between the counter and the compare. |
| mbed_official | 18:da299f395b9e | 687 | * |
| mbed_official | 18:da299f395b9e | 688 | * \note Compare 4 and 5 are only available in 16-bit mode. |
| mbed_official | 18:da299f395b9e | 689 | * |
| mbed_official | 18:da299f395b9e | 690 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 691 | * \param[in] comp_index Index of compare to check current flag |
| mbed_official | 18:da299f395b9e | 692 | * |
| mbed_official | 18:da299f395b9e | 693 | * \return Status indicating if flag was successfully cleared. |
| mbed_official | 18:da299f395b9e | 694 | * \retval STATUS_OK If flag was successfully cleared |
| mbed_official | 18:da299f395b9e | 695 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
| mbed_official | 18:da299f395b9e | 696 | * \retval STATUS_ERR_BAD_FORMAT If the module was not initialized in a mode |
| mbed_official | 18:da299f395b9e | 697 | */ |
| mbed_official | 18:da299f395b9e | 698 | enum status_code rtc_count_clear_compare_match( |
| mbed_official | 18:da299f395b9e | 699 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 700 | const enum rtc_count_compare comp_index) |
| mbed_official | 18:da299f395b9e | 701 | { |
| mbed_official | 18:da299f395b9e | 702 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 703 | Assert(module); |
| mbed_official | 18:da299f395b9e | 704 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 705 | |
| mbed_official | 18:da299f395b9e | 706 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 707 | |
| mbed_official | 18:da299f395b9e | 708 | /* Check sanity. */ |
| mbed_official | 18:da299f395b9e | 709 | switch (module->mode) { |
| mbed_official | 18:da299f395b9e | 710 | case RTC_COUNT_MODE_32BIT: |
| mbed_official | 18:da299f395b9e | 711 | /* Check sanity for 32-bit mode. */ |
| mbed_official | 18:da299f395b9e | 712 | if (comp_index > RTC_COMP32_NUM) { |
| mbed_official | 18:da299f395b9e | 713 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 714 | } |
| mbed_official | 18:da299f395b9e | 715 | |
| mbed_official | 18:da299f395b9e | 716 | break; |
| mbed_official | 18:da299f395b9e | 717 | |
| mbed_official | 18:da299f395b9e | 718 | case RTC_COUNT_MODE_16BIT: |
| mbed_official | 18:da299f395b9e | 719 | /* Check sanity for 16-bit mode. */ |
| mbed_official | 18:da299f395b9e | 720 | if (comp_index > RTC_NUM_OF_COMP16) { |
| mbed_official | 18:da299f395b9e | 721 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 722 | } |
| mbed_official | 18:da299f395b9e | 723 | |
| mbed_official | 18:da299f395b9e | 724 | break; |
| mbed_official | 18:da299f395b9e | 725 | |
| mbed_official | 18:da299f395b9e | 726 | default: |
| mbed_official | 18:da299f395b9e | 727 | Assert(false); |
| mbed_official | 18:da299f395b9e | 728 | return STATUS_ERR_BAD_FORMAT; |
| mbed_official | 18:da299f395b9e | 729 | } |
| mbed_official | 18:da299f395b9e | 730 | |
| mbed_official | 18:da299f395b9e | 731 | /* Clear INTFLAG. */ |
| mbed_official | 18:da299f395b9e | 732 | rtc_module->MODE0.INTFLAG.reg = RTC_MODE1_INTFLAG_CMP(1 << comp_index); |
| mbed_official | 18:da299f395b9e | 733 | |
| mbed_official | 18:da299f395b9e | 734 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 735 | } |
| mbed_official | 18:da299f395b9e | 736 | |
| mbed_official | 18:da299f395b9e | 737 | /** |
| mbed_official | 18:da299f395b9e | 738 | * \brief Calibrate for too-slow or too-fast oscillator. |
| mbed_official | 18:da299f395b9e | 739 | * |
| mbed_official | 18:da299f395b9e | 740 | * When used, the RTC will compensate for an inaccurate oscillator. The |
| mbed_official | 18:da299f395b9e | 741 | * RTC module will add or subtract cycles from the RTC prescaler to adjust the |
| mbed_official | 18:da299f395b9e | 742 | * frequency in approximately 1 PPM steps. The provided correction value should |
| mbed_official | 18:da299f395b9e | 743 | * be between 0 and 127, allowing for a maximum 127 PPM correction. |
| mbed_official | 18:da299f395b9e | 744 | * |
| mbed_official | 18:da299f395b9e | 745 | * If no correction is needed, set value to zero. |
| mbed_official | 18:da299f395b9e | 746 | * |
| mbed_official | 18:da299f395b9e | 747 | * \note Can only be used when the RTC is operated in 1Hz. |
| mbed_official | 18:da299f395b9e | 748 | * |
| mbed_official | 18:da299f395b9e | 749 | * \param[in,out] module Pointer to the software instance struct |
| mbed_official | 18:da299f395b9e | 750 | * \param[in] value Ranging from -127 to 127 used for the correction |
| mbed_official | 18:da299f395b9e | 751 | * |
| mbed_official | 18:da299f395b9e | 752 | * \return Status of the calibration procedure. |
| mbed_official | 18:da299f395b9e | 753 | * \retval STATUS_OK If calibration was executed correctly |
| mbed_official | 18:da299f395b9e | 754 | * \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were provided |
| mbed_official | 18:da299f395b9e | 755 | */ |
| mbed_official | 18:da299f395b9e | 756 | enum status_code rtc_count_frequency_correction( |
| mbed_official | 18:da299f395b9e | 757 | struct rtc_module *const module, |
| mbed_official | 18:da299f395b9e | 758 | const int8_t value) |
| mbed_official | 18:da299f395b9e | 759 | { |
| mbed_official | 18:da299f395b9e | 760 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 761 | Assert(module); |
| mbed_official | 18:da299f395b9e | 762 | Assert(module->hw); |
| mbed_official | 18:da299f395b9e | 763 | |
| mbed_official | 18:da299f395b9e | 764 | Rtc *const rtc_module = module->hw; |
| mbed_official | 18:da299f395b9e | 765 | |
| mbed_official | 18:da299f395b9e | 766 | /* Check if valid argument. */ |
| mbed_official | 18:da299f395b9e | 767 | if (abs(value) > 0x7F) { |
| mbed_official | 18:da299f395b9e | 768 | /* Value bigger than allowed, return invalid argument. */ |
| mbed_official | 18:da299f395b9e | 769 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 770 | } |
| mbed_official | 18:da299f395b9e | 771 | |
| mbed_official | 18:da299f395b9e | 772 | uint32_t new_correction_value; |
| mbed_official | 18:da299f395b9e | 773 | |
| mbed_official | 18:da299f395b9e | 774 | /* Load the new correction value as a positive value, sign added later */ |
| mbed_official | 18:da299f395b9e | 775 | new_correction_value = abs(value); |
| mbed_official | 18:da299f395b9e | 776 | |
| mbed_official | 18:da299f395b9e | 777 | /* Convert to positive value and adjust register sign bit. */ |
| mbed_official | 18:da299f395b9e | 778 | if (value < 0) { |
| mbed_official | 18:da299f395b9e | 779 | new_correction_value |= RTC_FREQCORR_SIGN; |
| mbed_official | 18:da299f395b9e | 780 | } |
| mbed_official | 18:da299f395b9e | 781 | |
| mbed_official | 18:da299f395b9e | 782 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 783 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 784 | } |
| mbed_official | 18:da299f395b9e | 785 | |
| mbed_official | 18:da299f395b9e | 786 | /* Set value. */ |
| mbed_official | 18:da299f395b9e | 787 | rtc_module->MODE0.FREQCORR.reg = new_correction_value; |
| mbed_official | 18:da299f395b9e | 788 | |
| mbed_official | 18:da299f395b9e | 789 | while (rtc_count_is_syncing(module)) { |
| mbed_official | 18:da299f395b9e | 790 | /* Wait for synchronization */ |
| mbed_official | 18:da299f395b9e | 791 | } |
| mbed_official | 18:da299f395b9e | 792 | |
| mbed_official | 18:da299f395b9e | 793 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 794 | } |
| mbed_official | 18:da299f395b9e | 795 |